Hey...we do too. But see, I would have thought that all words with 'ar' translate to 'ah' in speech.

If there's anything, I would say that some Australians tend to have very nasally voices (I'm looking at you, Far North Queensland), which is both annoying to listen to and can make for some humorous conversations. As an example, if you were to hear one of these people say "How you going?" it'd sound like "Howya ga'an?"